avoid-returning-void

added in: 1.15.0

style

🛠

Pro+

Suggests calling functions or methods with a void return type separately from the return statement.

Returning void invocations can be confusing for code reviewers and introduce unnecessary changes if the return type changes.

Example

❌ Bad:

void someVoidFunction() {
  ...
}

void someFunction() {
  return someVoidFunction(); // LINT: Avoid returning void expressions. Try calling the expression separately.
}

Future<void> asyncFn() async {
  return someVoidFunction(); // LINT: Avoid returning void expressions. Try calling the expression separately.
}

✅ Good:

void someVoidFunction() {
  ...
}

void someFunction() {
  someVoidFunction(); // Correct, invoked separately
  
  return;
}

Future<void> asyncFn() async {
  someVoidFunction();

  return;
}